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kablom mreznim

direktno se spoji na TP LINK TL-WR340G, promjeni IP npr o!ako

tj "#$"%&"5

iskop'aj TP LINK TL-WR340G, i preko L(N-a )a prikop'aj sa (*+L i to ti je to

Double Router Forwarding

New - Double Router Detector

We have FREE software that will automatically detect if you are in a double router setup. Gohereto learn more.

If you have not read ourWhat is Port Forwardingpage, now would be a good time to do so. It

presents fundamental port forwarding concepts and will mae understanding this guide easier.

!y aim is to eep this guide as simple as possible, while still providing you with the

information you need to now.

Asyou can imagine, port forwarding through two routers is a bit more comple" than port

forwarding through one router. #elow is a diagram of a double routed networ.
http://portforward.com/help/router-detector.htmhttp://portforward.com/help/router-detector.htmhttp://portforward.com/help/portforwarding.htmhttp://portforward.com/help/portforwarding.htmhttp://portforward.com/help/portforwarding.htmhttp://portforward.com/help/router-detector.htmhttp://portforward.com/help/router-detector.htm


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Important Things to Notice:

#oth $Router %&$ and $Router %'$ have TWOIP addresses( an InternalIP address

and an EternalIP address.

)here are TWO !ANs *+ocal rea -etwors.

)here are TWO WANs *Wide rea -etwors. If there is a +- then there is an

accompanying W-.

-ow that we have identified these things we can go on to learn how they affect us.

Networ" Address Translation

For the sae of readability, from now on I will refer to #Router $%#and #Router $as

#R%#and #Rrespectively.

Every router does NAT*-etwor ddress )ranslation, and has both an internal IP address

and an e"ternal IP address. )he e"ternal IP address is the one that connects that router to theW- *Wide rea -etwor. /sually the W- is the Internet. )he internal IP address


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connects the router to the internal networ. 0ur networ here is a bit more comple" than the

basic networ.

R&1s e"ternal IP address connects R& to the Internet, 2ust lie any other networ. R& also has

an internal IP address which provides -) to the internal +-& networ below it. )he only

thing connected to +-& is the router R'. R' connects to +-& with an e"ternal IP address.-otice that R'1s e"ternal IP address does not connect to the internet, but to another private

networ. nother way to say that is, R'1s W- IP address is e"ternal to R' but internal to R&.

R' then provides -) to the +-' networ below it. R' provides -) through its internal

IP address. )he computers then connect to +-' and receive data from R'.

+et1s assign IP addresses to everything, and see how it would loo.

-otice that the IP addresses that e"ist on +-& differ from the IP addresses on +-'. )he IP

addresses that are on +-& are &3'.&45.&.& and &3'.&45.&.6. )he IP addresses that are on

+-' are &7.7.7.& and &7.7.7.&6. 8ere is another diagram to help show the networ

divisions9


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'on(igure )ort Forwards

0ay enough idle chatter. +et1s tal about how to forward ports through this networ.

*tep %

We want to forward ports from the W- of R& to a computer connected to +-'. )o do this

we need to forward the ports in R& to R'1s e"ternal IP address. In this e"ample we would loginto R& and forward ports to &3'.&45.&.6.

Note:In order to connect to R&1s web interface one will probably have to plug a computer

directly into R& and establish a connection on +-&.

*tep &


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)he ne"t step is to forward ports from R' to the proper networ device whether it be a

computer, :#0:, or P;ynamic IP

addresses can?will change. s stated earlier, if the IP address of a networ device for which

ports you1ve forwarded ports changes, the ports will not be forwarded to the correct place. ;o

it is important to setup a static IP address on the networ devices for which you intend to

forward ports.

)he same applies to R' in our e"ample. R'1s e"ternal IP address should really be static. )his

is not too big of a problem if R' is the only networ device connected to +-&. If R' is the

only device on +-&, it is unliely that its IP address will change. If you have other devices

on +-&, you really need to setup a static IP address on R'. =ou would mae configurations

for a static IP address in the W- section of R'.

For more information on how to set up static IP addresses clic here. We even offer Free

*o(twareto aide in setting up static IP addresses called)F *etup *tatic I) Address.
http://portforward.com/store/pfconfig.cgihttp://portforward.com/networking/staticip.htmhttp://portforward.com/help/setup_static_ip_address.htmhttp://portforward.com/help/setup_static_ip_address.htmhttp://portforward.com/help/setup_static_ip_address.htmhttp://portforward.com/help/setup_static_ip_address.htmhttp://portforward.com/store/pfconfig.cgihttp://portforward.com/networking/staticip.htmhttp://portforward.com/help/setup_static_ip_address.htmhttp://portforward.com/help/setup_static_ip_address.htmhttp://portforward.com/help/setup_static_ip_address.htm


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--- (IN IN./ ---

INTRN(L IP address1 "#$"%&020

R/TR+ IP (ddress1 "#$"%&0"

TRN(L IP address1 #4$2034$"4

--- /T5R IN./ ---

IP1 "#$"%&020

*es'ription1 Realtek P6Ie G7 .amil8 6ontroller

*56P1

Primar8 WIN+1

+e'ondar8 WIN+1

(dapter Name1 9#(#762#-(#"$-46%3-#$4#-:&.6(*($#"4;

--- ip'on@A 1

T>nnel adapter Lo'al (rea 6onne'tionD ""1


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6onne'tion-spe'im oB 3 ?ops1

" H" ms H" ms H" ms "#$"%&0"

$ H" ms H" ms H" ms "#$"%&""

3 "" ms "0 ms "$ ms #4$200"

Tra'e 'omplete

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